4. A car manufacturer wants to launch a campaign for a new car. They'll show advertisements in 4 different categories. They asked 80 people which ad they liked most. The data is shown in the frequency column below. Conduct a goodness of fit test at the 5% level to determine if the ad preferences are evenly distributed. Advertisement Type Frequency Expected Frequency Environmentally Friendly 16 Luxurious and Masculine 29 Safe and Family Friendly 6 Spacious and Convenient 29 a. State the null and alternative hypotheses. (2 points) b. What is the test statistic? (Round your answer to two decimal places.) (3 points) c. What is the p-value? (Round your answer to four decimal places.) (3 points) L UD W E X O- O F2 F3 F4 F5 F6 F7 F8 F10 S % & CO 4 5